Company Creates New Power Amplifier Design in Smartphones for Greater Efficiency
November 1, 2012 9:59 PM
comment(s) - last by
The technology will first be used to address power base stations in developing countries, where diesel-powered generators consume billions of dollars of fuel per year
An MIT company has developed a new amplifier design that could significantly increase the
power efficiency of smartphones
Eta Devices, an MIT company based in Cambridge, Massachusetts, gave the power amplifier inside smartphones a much-needed efficiency boost to help save electricity consumed around the world.
The power amplifier in a smartphone turns electricity into radio signals. They use transistors to consume power in either output signal mode or standby mode. The efficiency can only be improved if the lowest amount of standby power is used, but this has been tricky so far because using low-power standby mode and suddenly jumping to high-power output signal mode leads to distorted signals. So both modes are kept high.
The amplifiers waste over 65 percent of their energy, which leads to a warm, draining battery in phones that send huge files or stream video.
More charging per day
leads to more electricity used around the globe.
But Eta Devices is looking to change this. The company's new design, called asymmetric multilevel outphasing, is an electronic gearbox that chooses through
that can be sent across a transistor and pinpoints the one that decreases power consumption the most. It does this 20 million times per second.
The new design not only does this when transmitting, but also receiving. When receiving, the gearbox sends out messages confirming when packets are received and letting the network know when they haven't. Packets are bits that make up a unit of Internet communications.
Eta Devices is looking to launch its new design in February 2013 at the Mobile World Congress. The technology will first be used to address power base stations in developing countries, where diesel-powered generators consume billions of dollars of fuel per year. From there, this new design will tackle the smartphone market around the world. It wants to create a smartphone chip with a single power amplifier that can juggle many different modes and frequencies.
Eta Devices expects that this new design can lead to smartphones using half the power they use today.
MIT Technology Review
This article is over a month old, voting and posting comments is disabled
RE: Could another possible use be.....
11/2/2012 10:29:52 AM
No, this is for signal amplifiers, not electric motors. It could be used to make more efficient eletronics for cars like sat radio and blue tooth, but not the EV power train.
"Folks that want porn can buy an Android phone." -- Steve Jobs
New Software Created to Estimate Battery Charge More Accurately
October 9, 2012, 8:30 PM
Nissan Talks About Leaf Battery Woes in Arizona
September 25, 2012, 8:53 AM
Quick Note: Samsung's Request to Dismiss Microsoft Lawsuit is Rejected
November 20, 2014, 12:53 PM
Amazon Offers "The Washington Post" Free for Six Months to Kindle Fire Owners
November 20, 2014, 7:41 AM
Apple Watch Screen Resolution, App Limitations are Laid Bare by Developer Kit
November 19, 2014, 11:31 PM
Apple Replaces “FREE” Label with “GET” on App Downloads in iTunes App Store
November 19, 2014, 5:38 PM
Nokia Lumia 635 LTE Windows Phone is Only $40 at Best Buy on Black Friday
November 18, 2014, 11:59 AM
Samsung to Slash Number of Smartphone Models by 30 Percent in 2015, Reduce Costs
November 18, 2014, 10:00 AM
Most Popular Articles
Austrian Pilots Call Surface 3 Pro Flight Bag a "Dream Come True"
November 14, 2014, 2:00 PM
U.S. Marshals Using Fake, Airplane-based Cell Towers to Scan Cell Phones of Americans
November 14, 2014, 9:05 AM
Microsoft: All* Lumias Will Get Windows 10; Adds Real-Time Battery Live Tile
November 13, 2014, 6:32 PM
Nokia Explores Two Paths Back to the Smartphone Market
November 14, 2014, 9:05 PM
Google Initiates Rollout of Lollipop Updates for Nexus 5, 7, and 10
November 12, 2014, 4:15 PM
Latest Blog Posts
Costco Gives Employees Thanksgiving Off; Wal-Mart Leads "Black Thursday" Charge
Oct 29, 2014, 9:57 PM
"Bear Selfies" Fad Could Turn Deadly, Warn Nevada Wildlife Officials
Oct 28, 2014, 12:00 PM
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
Space Terrorism is a Looming Threat For the United States
Apr 23, 2014, 7:47 PM
More Blog Posts
Copyright 2014 DailyTech LLC. -
Terms, Conditions & Privacy Information